package com.by.common.crud;

import com.by.common.bean.PageBean;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import org.springframework.beans.factory.annotation.Autowired;

import java.io.Serializable;
import java.util.List;
import java.util.Map;

public abstract class BaseServiceImpl<T, M extends IMapper> implements IService<T>{

    @Autowired
    protected M baseMapper;
    @Override
    public int save(T entity) {
        return baseMapper.insert(entity);
    }

    @Override
    public int update(T entity) {
        return baseMapper.updateById(entity);
    }

    @Override
    public int delete(Serializable id) {
        return baseMapper.deleteById(id);
    }

    @Override
    public T get(Serializable id) {
        return (T)baseMapper.selectById(id);
    }

    @Override
    public int deleteAll(List<Integer> list) {
        return baseMapper.deleteByIds(list);
    }

    @Override
    public PageBean query(Map map) {
        int page = 1; //默认查询第一页
        int pageSize = 10;//默认每页记录数
        if (null != map) {
            //判断有没有传page
            if (map.containsKey("page")) {
                page = Integer.parseInt(map.get("page").toString());
            }
            if (map.containsKey("pageSize")) {
                pageSize = Integer.parseInt(map.get("pageSize").toString());
            }
        }
        PageHelper.startPage(page, pageSize);
        List list = baseMapper.query(map);
        PageInfo info = new PageInfo(list);

        return new PageBean(page, pageSize, info.getTotal(), list);
    }
}
